From Williams et al., 2017:

[Deflandridium, Nagy, 1969, p.294.
Zygnematalean genus (Head, 1992. p.249). Acritarch genus according to Stover and Evitt, 1978, and Fensome et al., 1990.

Type species: Deflandrinium stellatum, Nagy, 1969 (pl.2, figs.3–4,6)]